﻿// See https://aka.ms/new-console-template for more information
Console.WriteLine("Hello, World!");

ITest obj = new Test();
obj.Run();

public interface ITest
{
    public void Run()
    {
        Console.WriteLine("123");
    }

    public const int obj=1;
    public static int obj2 = 2;
}

public class Test : ITest
{
}